Process for manufacturing tantalum capacitors

Patent · Tue Feb 02 00:00:00 EST 1993

OSTI ID:6261549

Lauf, R J; Holcombe, C E; Dykes, N L

A process for manufacturing tantalum capacitors in which microwave energy is used to sinter a tantalum powder compact in order to achieve higher surface area and improved dielectric strength. The process comprises cold pressing tantalum powder with organic binders and lubricants to form a porous compact. After removal of the organics, the tantalum compact is heated to 1,300 to 2,000 C by applying microwave radiation. Said compact is then anodized to form a dielectric oxide layer and infiltrated with a conductive material such as MnO[sub 2]. Wire leads are then attached to form a capacitor to said capacitor is hermetically packaged to form the finished product.

• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
• Patent Number(s): US 5184286; A
• Application Number: PPN: US 7-853474
• OSTI ID: 6261549
• Resource Relation: Patent File Date: 10 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
CAPACITORS
MANUFACTURING
BINDERS
COLD WORKING
HEATING
LUBRICANTS
MANGANESE OXIDES
MICROWAVE RADIATION
POWDERS
SINTERING
TANTALUM
CHALCOGENIDES
ELECTRICAL EQUIPMENT
ELECTROMAGNETIC RADIATION
ELEMENTS
EQUIPMENT
FABRICATION
MANGANESE COMPOUNDS
MATERIALS WORKING
METALS
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
240100* - Power Systems- (1990-)